47090805 has 16 divisors (see below), whose sum is σ = 77098560. Its totient is φ = 24530688.

The previous prime is 47090803. The next prime is 47090819. The reversal of 47090805 is 50809074.

It is not a de Polignac number, because 47090805 - 2¹ = 47090803 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47090803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35860 + ... + 37149.

It is an arithmetic number, because the mean of its divisors is an integer number (4818660).

Almost surely, 2^47090805 is an apocalyptic number.

It is an amenable number.

47090805 is a deficient number, since it is larger than the sum of its proper divisors (30007755).

47090805 is a wasteful number, since it uses less digits than its factorization.

47090805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73060.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 47090805 is about 6862.2740399958. The cubic root of 47090805 is about 361.1148694590.

Adding to 47090805 its reverse (50809074), we get a palindrome (97899879).

It can be divided in two parts, 47090 and 805, that added together give a triangular number (47895 = T₃₀₉).

The spelling of 47090805 in words is "forty-seven million, ninety thousand, eight hundred five".